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Exam questionKROK 1Medicine ยท 2017

Cytochrome oxidase is a hemeprotein that is an end component of the mitochondrial respiratory chain. What reaction is catalyzed with this enzyme?

Answer options

  1. Transfer of reduced equivalents to molecular oxygen
  2. Adenosine triphosphate synthesis
  3. Cytochrome splicing
  4. Cytochrome synthesis
  5. Transfer of reduced equivalents to ubiquinone
Correct answer

Transfer of reduced equivalents to molecular oxygen

Explanation

Cytochrome oxidase is a hemeprotein that is an end component of the mitochondrial respiratory chain. What reaction is catalyzed with this enzyme?Cytochrome oxidase is the last enzyme in the respiratory electron transport chain of mitochondria. Its main function is to convert molecular oxygen to water and aid in establishing mitochondrial membrane potential. Cytochrome c oxidase locates to the inner membrane which separates the mitochondrial matrix from the intermembrane space.

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